Hi Sean. I would like to propose a change mainly for starting being ClojureScript friendly.

It would be very useful to have all the protocols in one {{.cljc}} file and the implementations in different ones. This would open the doors for a ClojureScript port of some of the implementations down the road.

I don't know exactly how the split could be organized as I have just glanced the code but I am opening this issue to taste the waters about the idea.

Yeah, I think it would have to be a whole new set of namespaces at this point. Protocols in one common ns, and then probably each implementation in a separate ns so that some can be clj/cljs (like the BasicCache) and others can be either clj if they touch Java or cljc or cljs.

And core.memoize would probably need to follow suit since the two libs are coupled in various ways.